Advanced Math practice question

Answer: 1

The parabola's vertex is at x = 3, where y = 9 − 18 + 10 = 1. A horizontal line meets it once only at the vertex.

Common wrong answers

If you answered 3

3 is the x-coordinate of the vertex.

If you answered 10

10 is the y-intercept; y = 10 meets the parabola at x = 0 and x = 6.

If you answered -1

−1 has the sign wrong; y = −1 never meets the parabola.

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